Door and the like



E. H. McCLOUD.

000B AND THE LIKE.

APPLICATION FILED OCT. 4.1918.

Patented J une 8, 1920.

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wvawbo/c EdwardjMclozmv E. H. McCLOUD.

DooR AND THE LIKE.

Patented June 8, 1920.

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UNITED STATES PATENT OFFICE.

EDWARD H. MCCLOUD, OF COLUMBUS, OHIO, ASSIGNOR TO THE KINNEAR MANUFAC- TUBING COMPANY, OF COLIHVIBUSl OHIO, A CORPORATION OF OHIO.

DOOR AND THE LIKE.

Specification of Letters Patent.

Patented Julie 8, 1920.

Application ile'dl October 4. 1918. Serial No. 256.924.

To all whom t may concern:

Be it known that I, EDWARD H. MGC/LOUD,v

variety that is lifted and then deflected at its upper end outward from the door opening onto a horizontal track or support for the end. When such a door is heavy` it is common to attach an operating cord or chain, provided with a counter-weight, to the lower end of the door so as to facilitate its operation. But when the upper end of such a door is defiected onto the support approximately one half the load of the door is transferred to the support and the lifting force thereby relieved by that much. Hence in counterweighting such a door the counter-weighting and operating force should, in the interest of smooth and easy operation, be varied or made less when a portion of the load of the door is transferred to the support and greater when the load of the door is more largely supported bythe counterbalancing means. The object of the present invention' is Aa simplified and economical means whe/reby the result stated may be accomplished.- v

The invention is embodied in the example herein shown and described and then finallyA In the accompanying drawings- Figure 1 is a front elevation of the door equipped with the invention. l

Fig. l2 is a horizontal section on the line IL-II Fig. llooking down. Fig. 3 is avertical section on the line III- III Fig. 1 looking to the right showing the door in closed position.

Fig. 4 is a similar vertical section show- -ing the door partially raised and deflected.

Fig. 5 is a' detail partly in section illustrating the means for varying the effect of the counter-weight, the position of the parts being one of those existing when the upper end of the door is supported by the track and a portion only of the weight is exerted on the door. v

Fig. 6 is a detail like Fig. 5 except that the parts are shown as whe'n the entire weight is acting on the door. f

Fig. 7 is a view taken at right afngles to the view shown in Fig. 5.

a member 29 provided with ahole 29 a. chain 23 is passedA through the hole 29 a,

Fig. 8 is a detail of the equalizer for the door operating chains.

In the views 1() designates the door which may be paneled or plain as may be desired.

From the two lower corners of the door project trunnions or stud shafts 11 containing rollers 12 that travel in channels 13 ,erected at opposite sides of the doorway.

At the two upper corners of the door are rollers 14 suitably journaled to project laterally beyond the door. Mounted near the top of the door are brackets 15 having short curved channels 16 in which the rollers 14 project and travel when the door is raised and lowered. 17 are horizontal tracks placed to form continuations of the lower 4walls of the two curved channels 16. C0nnected with the stud shafts 11 of the lower rollers 12 are chains 18 and 19 passed over pulleys 2O and 21 and connected to an equalizer bar 22. Connected to said equalizer is a single chain 23. The character 24 designates the counterweight the weight of which is best about equal to that of the door, said weight being provided with plain links or arms 25'between which is mounted on a shaft 26 asheave 27. Pivoted on the shaft 26 is a yoke 28 having pivoted therein under the sheave 27 and connected to a small fixed bracket 30. T he chain 23 is provided. with a lug or 'enlargementBl located at the point where it will engage the member 29 and supporty the counterweight durin the movement of the door from its fully c osed position to the position where the load of its upper end is transferred to the track. The chain 23 is made long enough to provide for the travel of the weight through said distance and then its support by the loop of said chain. Vhen the weight is thus A supported one half of its load is borne by that leg of the chain connected with the bracket 30 and the other half by the shutter. In other words the lug 31- is so placed that the division of the load of the door between the chain 23 and the tracks is accompanied by a substantially corresponding division of the load of the gounterweight between said chain and the bracket 30.

The pulleys 20 and 21 carrying the chains 13 and 19 are turned to raise or lower the door by means of an endless chain 32 enga ging a wheel 33 fixed on a shaft 34, said shaft The" 34 having fixed thereon suitable gears 35 that engage gears 3G on the shaftcarrying the pulleys.

The forms of the parts eanbe changed without departing from the gist of the invention as claimed.

The invention may be useful in the construction and operation of windows. partitions and the like and bythe term door l include such analogous structures.

vWhat I Claim is:

l, In Combination with a. door, means for deflecting the Ydoor at its upper end when raised, meansupon which a portion of the Weight of the door is supported when defieeted` a ooul'lter-weight for the door, a looped flexible member connected with the door and with a fixed point for supporting said counter-weight, and a lug in said flexible member for sustaining said counter-Weight substantially when the door Wholly supports said counter-weight.

2. In combination with a door, means for defleoting the door at its upper end when raised, means upon whichl a portion of the weight of the door is supported When deflected. a Counter-weight for the door provided with a pivoted member, a looped flexible member eonnevted with the door and with a fixed point for supporting said counterweigjht, and a luer in said fieXible member to engage said pivoted member for sustaining said counter-weight substantially when the door wholl)v supports said counter-Weight.

3. ln'combination with a door, means for defieeting' the door at its upper end When raised. means upon which a portion of the weight of' the door is supported when defieeted, .a counter-Weight for the door pro- 5 vided with a member` pivoted toit and a second perforated member pivoted in the latter, a. looped flexible member connected with the door and with a fixed point for supporting -said Counter-Weight, and a lug in said flexible member to engage said perforated pivoted member for sustaining said counter-weight substantially when the door Wholly supports said counter-Weight.

EDVARD H. MCCLOUD. 

